Polyurethane composite hard polyfoam as well as preparation method and application of polyurethane composite hard polyfoam

Abstract

The invention relates to polyurethane composite hard polyfoam as well as a preparation method and application of the polyurethane composite hard polyfoam, wherein the polyurethane composite hard polyfoam consists of ingredients A and ingredients B, wherein the ingredients A are formed by mixing isocyanate and inorganic materials, the ingredients B are formed by mixing combined polyether, catalysts and foaming agents, and the weight ratio of the ingredients A to the ingredients B is (1.1-.14):1. The isocyanate in the ingredients A used by the polyurethane composite hard polyfoam contains -N-C=0 which can easily take reaction with active-hydrogen-atom-containing compounds such as amine, water, alcohol, acid and alkali. The isocyanate is a vacuum dehydration raw material, the dispersion of superfine powder cannot be influenced, and the uniform dispersion can be realized in organic solvents. Meanwhile, some inorganic materials can also be added into the ingredients B, for example, hydroxyl ions are contained in the oxyhydrate and can be possibly and perfectly compatible with the combined polyether containing hydroxy functional groups. The added inorganic materials can be one single ingredient and can also be composite materials obtained through compounding polyurethane inorganic materials and adding other fire retardants. Various kinds of inorganic materials are adopted for compounding, and the problem of poor foam performance generated by the single use can be solved.

Description

technical field [0001] The invention relates to a polyurethane composite rigid foam plastic, and also relates to a preparation method and application of the polyurethane composite rigid foam plastic. Background technique [0002] Polyurethane has become one of the six major synthetic materials, and its application range ranks first among all kinds of materials. Polyurethane rigid foam plastic, referred to as polyurethane rigid foam, mostly has a closed-cell structure and is generally room temperature foaming. It is mainly used for refrigeration and refrigeration equipment in food and other industries; it can also be used for heat preservation of industrial equipment. However, compared with building energy-saving materials such as rock wool, glass wool, cement polystyrene board, and silicate composite thermal insulation mortar, the production cost of polyurethane rigid foam is relatively high, and its heat resistance, flame retardancy, and antistatic properties are poor. , l...

AI Technical Summary

Problems solved by technology

However, compared with building energy-saving materials such as rock wool, glass wool, cement polystyrene board, and silicate composite thermal insulation mortar, the production cost of polyurethane rigid foam is relatively high, and its heat resistance, flame retardancy, and antistatic properties are poor. , limiting its further application

This will cause certain obstacles to its large-scale application, so how to reduce the production cost of polyurethane rigid foam and improve its physical properties has become a difficult problem to overcome

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